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Portable chromatograph GC-8890SD PLUS for the analysis of gases dissolved in transformer oil
Main features The device is made according to a classic three-detector design and allows for a complete analysis of 7 dissolved gases in insulating oil in one sample injection: H₂, CH₄, C₂H₄, C₂H₆, C₂H₂, CO, CO₂. The results of the analysis are fully consistent with the data obtained in stationary laboratories...
Description
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Main Features
The device is made according to a classic three-detector design and allows for a complete analysis of 7 dissolved gases in insulating oil in one sample injection: H₂, CH₄, C₂H₄, C₂H₆, C₂H₂, CO, CO₂. The results of the analysis fully correspond to the data obtained on stationary laboratory chromatographs. Thanks to its compact modular design, the device has small dimensions and weight, which makes it easy to transport and carry out express analysis directly on site. This allows you to timely and accurately monitor the condition of transformer equipment with minimal labor and resources. According to the results of tests carried out by the Shandong Institute of Metrology, the device meets the world level in all main characteristics.
Applicable standards:
GB/T 17623-2017 “Gas chromatography method for determining the content of dissolved gases in insulating oil”;
GB/T 7252-2001 “Guide to the analysis and diagnostics of dissolved gases in transformer oil”;
DL/T 722-2014 “Guide to the analysis and diagnostics of dissolved gases in transformer oil.”
Functional Features
1. Wireless remote control - supports wireless data transmission, the ability to remotely monitor and control many parameters via a laptop or tablet computer.
2. Three-detector circuit - with one sample injection, all seven gas components in transformer oil are simultaneously determined.
3. Automatic protection - when pressure or flow goes beyond the established limits, the bridge current is automatically switched off.
4. Automatic Flow Display and Control (EPC) - Electronic flow sensors display real-time carrier gas flow and automatically adjust all gas parameters.
5. Memory function - When there is a power failure or momentary disturbance, the control parameters are automatically saved and restored.
6. Protection and self-diagnosis functions - if the platinum thermal resistance is faulty or the temperature is exceeded, the heating is automatically turned off, indicating the location and type of fault.
7. Ease of operation - convenient setting of parameters; Everyday use requires only minimal steps to turn the device on/off.
8. Intelligent Trigger Timing - Built-in touch trigger technology improves retention timing accuracy.
9. All components of the device are integrated into a case with a retractable handle, allowing it to be carried either by hand or on wheels, which is ideal for field conditions.
10. Optional - powered by DC lithium battery (upon customer's request).
Specifications
1.Minimum detectable concentrations (µL/L)
| H₂ | CO | (O₂) | (N₂) | CO₂ | CH₄ | C₂H₄ | C₂H₆ | C₂H₂ |
| 1 | 3 | 10 | 20 | 5 | 0.1 | 0.1 | 0.1 | 0.1 |
2. Retention time reproducibility: deviation ≤ 1%.
3. Reproducibility by quantitative determination: deviation ≤ 3%.
4. Control modes: the ability to control through the workstation and from the instrument panel.
5. Number of temperature zones: 6.
6. Temperature control range: from room temperature +4 °C to 450 °C.
7. Temperature maintenance accuracy: ±0.05 °C.
8. Programming the temperature of the speaker thermostat: ≥ 20 steps.
9. Programming the sample injection temperature: ≥ 7 steps.
10. Overall dimensions: 560 × 440 × 260 mm.
11. Weight: 17 kg.
Workstation
A specialized workstation for a chromatograph is developed on the Windows platform and fully complies with the requirements of current state standards for fault diagnosis. Equipped with a 24-bit high-resolution USB data acquisition board. Input signal range: from –2 to +2 v, resolution – 1 uv.
Main functionality:
1. Automatic start: automatic switching on of the workstation and chromatograph based on the sample injection peak signal.
2. Data management: saving analysis results by equipment category for ease of search and management.
3. Flexible report printing: support for both fixed and user-configurable print templates.
4. Intelligent diagnostics: threshold exceeding functions, three-component diagnostics, TD diagram, component concentration graph, David's triangle and other fault analysis methods.
5. Automatic identification and calibration: editing the peak identification table, automatic calculation of calibration coefficients and averaging of multiple calibration results.
6. Trend analysis: visual display of the dynamics of changes in the concentrations of each component based on historical data.
7. Chromatogram processing: baseline correction, chromatogram splicing and other functions for efficient and standardized data analysis.
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